23711637168
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Ran 29 Mar 2026 02:51PM UTC

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Files 77

Run time 1min

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Committed 29 Mar 2026 02:48PM UTC coverage: 85.722%. Remained the same

Build # 23711637168

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push

github

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web-flow

Commit Message

docs: usbser error 22 root cause investigation (#566)

* docs: add usbser error 22 investigation with root cause

Root cause: modem reset tears down USB pipe endpoints. The COM port
handle survives re-enumeration but the write pipe is stale. Read-triggered
writes succeed (pipe refreshed by read completion) while cold writes
(health poll timer) fail with ERROR_BAD_COMMAND (22).

Fix: PR #564 triggers reconnect after N consecutive health poll failures,
which closes and reopens the COM port with fresh pipe handles.

Relates-to: #529

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* docs: address review comments on usbser investigation

- Clarify read-response vs independent write distinction
- Fix timeline annotation for 03:02:06 health poll
- Update code snippet to match actual TransportError types

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* docs: fix SharedWriter type, redact instance ID, use relative paths

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Alan Jowett <alan.jowett@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Coverage Stats

23228 of 27097 relevant lines covered (85.72%)

155.87 hits per line

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ID	Job ID	Ran	Files	Coverage
1	23711637168.1	29 Mar 2026 02:51PM UTC	77	85.72	GitHub Action Run

Alan-Jowett / sonde / 23711637168
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